Hose-coupling.



UNITED .STAT-ES CHARLES aemFLIN, or Msnroan, MASSACHUSETTS.

` ."HOSE-COUPLINQ.

Specification of Letters Patent.

f Patented July 2,1907.

Application med may r7.190% serial no. 216,500.v

To all whom it may concern: l i i Be it known that I, CHARLES'A.CLAFLIN, of Medford, in the county of Middlesex and State ofMassachusetts,

4have invented certain new and useful 'Improvements in Hose-Couplings,of which the'followingvis a specification. y

This invention relates to couplings yfor flexible hose,

Aand is embodied in'a coupling member having a nipple l adapted to beinserted in either end of a pieceof hose,

and to be detachablyengaged with a complemental` coupling member or avalve or other fitting.

The invention has for its chief object to provide the nipple with aflexible extension .adapted lto enterthe hose with th e nipple, and toproj ect into the hose beyond the entering end of the nipple to preventabrupt benda piece of hose engaged therewith.` Fig. 2 represents avsection on line 2--2 of Fig. 1.

tion on line 3 3 of Fig.V 2. Fig. 4 represents a side ele-` vation of aportion of the nipple, the flexible extension being shown in'dottedlines. u l

The same letters of reference indicate the same parts in all thefigures.

In the drawings, a represents a piece of flexible hose, and b representsa tubular nipple, a portion of which is adapted to be inserted in oneend of the hose a. The said Portion isl preferably provided withexternal crrugations 12 on that portion which enters the hose, and:

stop or abutment 15,`a`gainst which the inner end of the coiled wireabuts when the coil has been screwed to the desired point on the nipple,`the said abutment prei venting the coiled vwire from being screwedinwardly too far upon the nipple. The convolutions of the coil 14 whichare engaged with the nipple, are preferablyl secured by solder, so that`the coil is rigidly attached-at its inner end portion to the nipple.The coil or flexible extension'14,`being rigidlyl connected with andpro- Fig. 3 represents aseo-,

jecting'outwardly from the nipple enables the hose to be secured to 0rremoved from the said flexible exten- 'sion by a swinging action. Whenso assembled the extension projects into the hose, and bears upon aconsiderable portion of the yinteriorof the hose adjacent to the nipple,without forming a permanent lining for any part oi the hose. The saidflexible extensionforms a resilientinternal snpportfor the hose,maintaining the fullsize of'thel passage, and preventing the abruptbending andthe collapsing and `consequent breaking of that portion ofthe hose which is adjacent to the nipple, thus prolonging the life andusefulnessof the hose.

means for engaging a complemental coupling member, the said means, ashere shown, comprising an external lscrew thread 16 on one of the endportions of the nipple, the said thread being adapted to engage aninternal thread in a'valve or fitting.

Means are provided for clamping the end portion of the hose upon thenipple, the preferred means boing two" semi-circular clamps e e,'adapted to substantially` surroundthe hose, and formed on arm's f f,which are hinged at `g g to ears form-ed on the nipple. The

. clamps are provided with ears e', which are connected by bolts i. Theportion of the coupling which surrounds tlie hose is preferably providedwith inwardlyprojecting ribs c2 e2, the corresponding portion of thenipple being'provided with an 'outwardlyprojecting circumferential ribe3, engaging the inner surface of the `'hose at`a point between thepoints where the ribs e2 e2 engage the outer surface of the hose, asshown in Fig. 3.

Referring to Fig. 3 it will be seen that the construction issueh that,in a direction'or line of section par# allel with the longitudinalcenter ofthe coupling, the rib e of the nipple is curvedor rounded, andthe space between the ribs e2 e2 ofthe clamps is internally rounded orcurved concentrically with the curve of the rib e3. Therefore, thematerial of the hose is bent without be- `ing unduly bitten so as to becut or injured or otherwise weakened by the opposing ribs of the device.

It will be seen that the flexible extension 14 is prctically tubular,and forms a flexible tubular lining for a portion of the internalsurface of the hose, the said lining being rigidly attached at one endto the nipple, and

'ruptly, but'is required to bend gentle urvature.

I do not limitmyself .to the means here shown and des scribedforclampingf` the hose to the nipple, and for detachably lconnecting thenipple to a complemental .coupling member, as the construction may bevariously Vmodified .as to these `features vwithout departing from thespirit of the invention'. y y

. The pitch of the convolutions of the coil 14 is preferably `decreased.gradually from the outer to thefilmer portion of the' coil, theconvolutions being separated reinforcing the portion of the hose whichvis adjacent4 to the nipple,` so that the said portion cannot be bent ab-The nipple is provided at one endwith suitableI l from each other at theouter portion, and more closely wound at the inner portion. Thisconstruction increases the resilience of the outer portion of the coil`and reduces the liability of. the hose to bend and crack over o r uponthe outer end of the coil.

I claim: M

1. A hose coupling comprising a rigid tubular nipple adapted to enter apiece of hose, and provided with a helically coiled wire having aplurality of its coils each rigidly attached to the nipple and forming aIiexible extension of the nipple adapted to be removably connected withthe hose, said nipple having means for engaging a complemental couplingmember.

2. A hose coupling comprising a tubular nipple having an externalhelical groove in one of its end portions, a stop at the inner end ofsaid groove, and a helically coiled wire having a plurality of its coilseach rigidly engaged with said groove and abutting at its inner endagainst said stop, the said coiled Wire' forming a exible extensionprojecting from one end of the nipple and adapted to re movably engagethe interior of a piece of hose, the said nipple having means at itsopposite endfor engaging a complemental coupling member.

3. lA hose coupling comprising a tubular nipple provided at one end witha dexible extension composed of a helically coiled wire rigidly attachedto the nipple'and projecting therefrom into'the hose, said nipple havinga circumferential rib adjacent to the inner end of the coiled wire, andclamps hinged to the nipple and provided with internal ribs located atopposite sides of the said external rib, the nipple being provided atone end with means for engaging a complemental coupling member.

4. A hose coupling comprising a rigid tubular nipple having a flexibleextension composed of a hellcally coiled wire having a plurality of itscoils each rigidly attached to the nipple and projecting therefrom intothe hose, the convolutions of the coil decreasing in pitch from theouter portion of the coil inwardly to increase the resilience of thesaid outer portion, the said coil being independent of the hose wherebythe hose may be connected to the nipple or removed therefrom while thecoil remains as an extension of the nipple.

5. lA hose coupling comprising a tubular nipple having a circumferentialenlargement forming an outwardly-projecting convex rib between its endportions, and clamps hinged to the nipple, and provided with internalribs located at opposite sides of the said external rib, and separatedby a concave recesssurrounding and corresponding to the external rib,the rib of the nipple and the space between, the ribs ofthe clampspresenting opposing snrfaces which are substantiallyconcentricallycurved to bend the material of the hose without undulybiting it, the nipple being provided at one end with means for engaginga complemental coupling member.

In testimony whereof I have aixed my signature, iu presence of twowitnesses.

CHARLES' A. CLAFLIN.

Witnesses E. H. C RANDELL, THos. J. BERRY.

